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łączność Szybowa
Telefon Górniczy Iskrobezpieczny


The devices of the intrinsically safe industrial telephony PTI are designed to carry out telephone connection in industrial plants (coking, petrochemical, spirit, and other) characterized by the high degree of explosion hazard (II explosion group, categories 1, 2, and 3) as well as the high levels of noise and extensive dustiness, and other non-typical local conditions for telephone sets installation.


With all types of telephone exchanges

Power supply

Buffer – 48 or 60V DC


  • any, in modules of 16 NN
  • maximum per one rack – 224 NN
  • system maximum – unlimited

Station equipment

  • SSI-PTI rack – equipped with the intrinsically safe separation units ZSI

Subscriber’s equipment

  • Intrinsically safe mining telephones TIG and TIG-S (S – with optical signaling device)
  • Intrinsically safe industrial broadcasting telephone PST

TIG technical data

MarkingI M1 ExiaI Ma, II 1G Exia IIC T5 Ga
Power supplycentral from intrinsically safe separation units ZSD (ZSI)
Polarity of the subscriber's lineany
Power consumptionca. 23mA
Input impedance600 Ω
Nominal signal level0 dBm
Local effect attenuation coefficientmin. 16 dB
Calling signal loudness levelmin. 90 dB from 1 m distance
DialingPM / DTMF
Numbers memoryredialing up to 32 digits
direct access memory - 3 x 16 digits
indirect access memory - 10 x 16 digits
Optical calling signalvisible from long distance
Casing protection degreeIP65
Dimensions275x140x90 mm
Weightca. 2.5 kg
Operating temperatures rangefrom -40 to +40 ° C